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At long last I have managed to image Caliban, also known as Uranus XVI. It is a small (circa 72km) outer satellite of Uranus which was discovered in September 1997 using the Hale 5m telescope at Palomar. Incidentally, Sycorax (U-XVII)was discovered in the same observing session. That satellite is around 1.7 magnitude brighter and so much easier to observe.
Although a three hours exposure, unfiltered for maximum sensitivity, was used the signal to noise ratio is barely 3 and serious image processing was needed to produce a relatively clear image. Even so, it is not especially obvious. The reason is that the MPOC ephemeris predicts that the satellite has a magnitude of 22.2 at the time of observation. More information is available at http://www.astropalma.com/Projects/Satellites/caliban.html
Hi Stargazers. This is perhaps 2 questions in one. I have recently had to replace my SynScan hand controller after the Welsh climate did for my previous one. I use it to control an EQ8 mount. It works fine but being a version 5 has an extra port. As well as the Port to connect to the mount and the multi-purpose port it now sports a USB port type B ( the square sort like wot wired printers use ). This is new and I wonder what can it be used for ? the documentation with the hand controller does not seem to mention it at all.
Also I use a gps mouse that plugs into the multipurpose port but I would like to use this port to connect to my computer serial port, and "The Sky X". Clearly I can't run this and the gps at the same time.
once the mount has gone through the initial setup with the gps mouse connected, is it ok to unplug the GPS mouse and plug in the computer cable instead ? will this work or will the mount lose its time and location data when the gps is unplugged. Altertnatively is there a way I can use the new USB port to connect to the computer instead ?
From my reading of the "Sky X" help pages it only seems to work via a serial connection. Any ideas or thoughts on these points would be most welcome. A friend suggested trying a usb to serial adapter in reverse !! I think he was joking !!!
Thank you for any comments.
My friend and I were outside last night looking at the sky and looking for satellites. We saw a few of what I assume were satellites (flat unblinking steadily moving lights) One of them which crossed the sky East to West emitted 2 incredibly bright and intense, very large flashes of pure white light, spaced maybe 2 minutes apart from each other. Neither of us have any more than a basic school knowledge of astronomy but are both interested. We wondered if anyone on here could help shed any light on the flashing satellite we saw?
Many thanks for your time.
I was out most of last night under a lovely clear sky and did a spot of basic imaging of a few Messiers. On looking at the images today there were plenty of satellite trails as always, and Stellarium helps me identify them mostly, but I'm having trouble identifying one, so any help or useful sources I can try would be appreciated.
The area I was looking at was around M90 and in taking 20 or so one minute exposures I spotted a couple of trails. The first moving slowly took around 10 minutes to cross the width of the imaged area so appears on ten images and I can't find a match for this. The image below was taken at approx. 2.14am.
The second trail moves fairly swiftly taking about 1.5 minutes to travel the length of the frame, so moving much faster and appears to be Cosmos 2476, taken at 2.23am.
Any ideas welcome.
I've assumed its a satellite and not an asteroid or another one of those Teslas